Watch The Dog Lover for Free: How to Stream the Movie Online at 123Movies. . Sara Gold is a young girl on a quest to save man's best friend. When she goes undercover to take down a dog breeder suspected of wrongdoing, she quickly finds out she might be on the wrong side of right. Sara must make a decision: to continue and follow the orders of her organization, United Animal Protection Agency, or trust her instincts and the boy she's fallen in love with.